Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Study on System Chip of Digital Automatic Photo Power Control for LED

Not Accessible

Your library or personal account may give you access

Abstract

Light-emitting diodes at working condition tend to change its own characteristics effected by heat, therefore, designing of optical power control system will be applied as a light sensor optical power detector for optical power monitoring, as well as adjustments to compensate its performance. Not only additional cost is applied, but also caused problem of directivity of the light sensing generation of an error. This research designed programmed microcontroller as automatic current control to monitor the voltage and the light emitting diodes to control the current mode which achieves automatic optical power adjustment function. Without using the light sensor as a sensing element to dispense optical power, the circuit structure is simplified, this circuit can operate separately in addition to wireless transmitted to the remote host outside the circuit with current voltage and current values, timely information on the current circuit can be observed.

© 2014 Optical Society of America

PDF Article
More Like This
Integration Scheme toward LED System-on-a-Chip (SoC)

Tsz Him Mak, Zhaojun Liu, Wing Cheung Chong, Yuan Gao, Xiangming Fang, Johnny K. O. Sin, Philip K. T. Mok, and Kei May Lau
DTu3D.4 Solid-State and Organic Lighting (SOLED) 2014

On-chip Optical Interconnects using InGaN Light-Emitting Diodes Integrated with Si-CMOS

Bing Wang, Li Zhang, Wenjia Zhang, Cong Wang, Kenneth Eng Kian Lee, Jurgen Michel, Soo-Jin Chua, and Li-Shiuan Peh
AW4A.2 Asia Communications and Photonics Conference (ACP) 2014

A Study of Light-Extraction-Efficiency of LEDs Packaged on a Transparent Lead-Frame

Bing Liang, Yimin Chen, Tao Zhang, and Zhongliang Jin
DW3D.4 Solid-State and Organic Lighting (SOLED) 2014

Poster Presentation

Media 1: PDF (3127 KB)     
Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved